Neutron powder diffraction experiments have been performed on CePd 3S4 as well as measurements of magnetic and transport properties on a single-crystalline sample. Magnetic susceptibility increases markedly below TC = 6.3 K and a spontaneous magnetization appears below TC. The logarithmic temperature dependence of electrical resistivity implies that CePd3S4 is classified into a Kondolattice compound whose Kondo temperature is comparable to TC. Magnetic susceptibility is analyzed satisfactorily with a crystalline electric field model that the 4f ground state of Ce3+ is the Γ8 quartet with the excited Γ7 doublet located at 630 K. The magnetic structure of CePd3S4 was determined to be a canted structure with a canting angle of 51°. Such a canted structure is a result of the ferromagnetic (FM) ordering and simultaneous -type antiferroquadrupolar (AFQ) ordering at TC. The smaller magnetization values and an unexpectedly high TC can be explained by the simultaneous occurrence of AFQ and FM order.
ASJC Scopus subject areas
- Physics and Astronomy(all)